Getting a to work on Windows 11 can sometimes be tricky because the hardware is older, and official support from the original manufacturer ( Qinheng Electronics/WCH ) often requires manual intervention. If your adapter isn't working right out of the box, this guide will help you find the correct driver and get connected. Where to Find the CH9200 Driver Link
Does your device show up as an in Device Manager, or is it listed under Network Adapters with a warning icon? SilverDragon24/CH9200_windows: CH9200 USB ... - GitHub ch9200 usb ethernet adapter driver for windows 11 link